The first fire broke out at the former Saint Cecilia Church on Ohio Street. After that, four fires broke out in garages in the area of Indiana Avenue.

"Once we got here, we had three garages that were totally involved, so it was a heavy fire volume even before we arrived on scene," said Glassport Fire Chief Wayne Lewis.

One resident put out a fire in their garage with a fire extinguisher.

Investigators believe the fires are likely the work of an arsonist.

"Our concern is that we've got someone running around starting fires. We have some older structures here. We have vacant buildings and we don't want this to escalate. We want to find somebody, and (we) ask the public if anybody has any knowledge, please contact the police department," said Glassport Mayor Michael Evanovich.

No one was hurt in any of the fires and the fire marshal is investigating all of them.

"I grew up in this area. My mom lives right down the street. She's 87 and not in good health. I'm worried and concerned. You worry about things like this," said Glassport native Mary Mellinger.

Anyone with information about the fires is asked to contact the fire marshal's anonymous tip line at 412-473-2776.